EP0084581A1 - Elément de construction armé et méthode de fabrication - Google Patents

Elément de construction armé et méthode de fabrication Download PDF

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Publication number
EP0084581A1
EP0084581A1 EP82100480A EP82100480A EP0084581A1 EP 0084581 A1 EP0084581 A1 EP 0084581A1 EP 82100480 A EP82100480 A EP 82100480A EP 82100480 A EP82100480 A EP 82100480A EP 0084581 A1 EP0084581 A1 EP 0084581A1
Authority
EP
European Patent Office
Prior art keywords
slab
concrete
reinforcing
sections
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP82100480A
Other languages
German (de)
English (en)
Inventor
John C. Leemhuis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aircontrol Systems Inc
Original Assignee
Aircontrol Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aircontrol Systems Inc filed Critical Aircontrol Systems Inc
Priority to EP82100480A priority Critical patent/EP0084581A1/fr
Publication of EP0084581A1 publication Critical patent/EP0084581A1/fr
Ceased legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/48—Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating

Definitions

  • the field of the invention is broadly that of construction and construction materials and more especially, it deals with an improved reinforced concrete truss slab, and a method of fabrication.
  • Patent No. 3,334,458 discloses a structural member which is a reinforced concrete truss slab which embodies a lower reinforced concrete slab and an upper slab with a network of passageways formed by way of steel forms or pans integrated into the structural member. There are columns of concrete extending between the upper reinforced slab and the lower reinforced slab with reinforcing members or struts extending between the reinforcing means in the lower slab and in the upper slab.
  • the lower slab is first poured with its reinforcing members supported on supports which are known as chairs.
  • the forms or pans are positioned on the lower slab after which the upper slab is poured.
  • the connecting reinforcing members or struts are in position to be embedded in the columns and in such position they are in the way of the pouring process and thus impede efficient fabrication. Also, this construction is an impedement to ease of screeding after the slab is poured.
  • the invention is concerned with a type of structural member as described in the description of the prior art.
  • this reinforcing strut member which can be referred to as an insert, is formed in sections including a lower section and upper section, which is detachable from the lower section, the sections preferably being threaded together.
  • the lower section includes a point which can be driven into the wooden plywood slab on which the lower concrete slab is poured.
  • the inserts are positioned on centers corresponding to the positions of the concrete columns between the upper and lower slabs.
  • the lower section is provided with two diameters, forming an angular shoulder which with a washer serves to provide a support for the reinforcing members before the slab is poured, thus eliminating the use of "chairs" to support the reinforcing members.
  • the upper sections of the inserts are simply threaded into the lower sections, thus being in position for becoming embedded in the upper slab, the upper sections serving to support the reinforcing material of the upper slab before pouring.
  • the invention further provides and makes possible improvements, with respect to the screeding after pouring of the lower slab.
  • a modified form of insert having a third section in the form of a straight rod, which after pouring of the lower slab, these third sections can be threaded into the first sections of the insert, these sections being threaded in on 8' centers, for example, to facilitate screeding.
  • An angle bracket having a part with a hole in it can slip down over the rod and then be set with a wingnut.
  • This bracket forms a holding bracket for a 2' x 4' and then a screed can be simply slid along the tops of such 2' x 4's to screed the concrete down to the desired level.
  • the primary object of the invention is to make available an improved composite reinforced concrete truss member of the type having a lower reinforced concrete slab and an upper reinforced concrete slab, with a network of passageways formed in it and with reinforcing struts extending between the reinforcing means in the lower slab and in the upper slab, wherein the said connecting struts comprise insert means, : having a lower section and an upper section, which are separable so that the lower slab can be poured and screeded without interference from the reinforcing struts.
  • a further object is to make available a reinforcing strut in the form of a multi-part member having a bottom section, which can be supported on a wooden platform on which a concrete slab is poured and which is configurated to support reinforcing material and to which an upper section can be secured after the lower concrete slab has been poured and screeded.
  • a further object is to realize an improved reinforcing strut member in the form of an insert as described, wherein a third intermediate section is provided adapted for supporting a screed holding bracket to facilitate the screeding of the lower slab of the composite member.
  • a further object is to realize the advantage of accurate assured placement of the steel in the lower slab, with the assured vertical axis of the inserts.
  • numeral 10 in Figs. 1,2 and 3 designates-a preferred form of the improved reinforced structural member.
  • Numeral 12 in Fig. 4 designates a preferred form of the improved insert member, that is, the reinforcing strut member that extends between the upper and lower slabs.
  • the structural member of Figs. 1, 2 and 3 is similar to that shown in Figs. 9-11 of Patent No. 3,334,458.
  • the forms or pans for the structural member preferably would correspond to that shown in Figs. 6 and 7 of the earlier patent.
  • numeral 16 designates a base slab which is poured first, preferably on a surface made of wood, such a plywood or the like, as designated at 18.
  • the lower slab 16 has reinforcing members embedded in it, as will be described.
  • the upper concrete slab is designated at 22, the slab overlying the network of forms or pans 23, which as stated correspond to those of the previous patents and which form the interlocking passageways such as designated by the numeral 24.
  • the upper slab forms the columns or pillars 26, which are between adjacent forms and which connect the upper slab and the lower slab.
  • the reinforcing struts in the form of the inserts 12, are positioned as shown to align with the columns or pillars 26.
  • Each of the reinforcing struts is in the form of an insert, which includes a bottom section 30.
  • the lower part of this section has a larger diameter, as designated at 32, so as to provide a square shoulder 34.
  • Numeral 36 designates a pointed member which is losely placed into the lower end of the section 30, which can be driven into the wooden platform 18 to support this section of the insert during pouring of the slab.
  • the section 30 has a threaded bore 42.
  • Numeral 44 designates a washer that can fit down over the upper part of section 30 against the shoulder 34.
  • Numeral 50 designates the second section of the insert 12, which includes a threaded part 51, which comes into a position associated with the reinforcing members embedded in the upper slab 22, as will be described.
  • Numeral 54 designates an end cap, having a threaded stem 55, which can be threaded into the bore 42 in a position as shown in Fig. 2 during pouring of the lower slab, the height of the lower section 30 being such as to be level with the upper surface of the lower slab when poured.
  • Numerals 62 and 63 designate the reinforcing members that are embedded in the lower slab.
  • Numeral 60 designates reinforcing mesh usually two layers.
  • Numerals 64 and 66 designate the reinforcing members that are embedded in the upper slab. It will be observed that the angular part 52 of the second section 50 insert extends over the reinforcing member 66 shown in Fig. 1. Normally the reinforcing member 66 - is fastened to the angular part 52 of the second section 50 to hold it in position before pouring the upper slab.
  • the wooden surface such as plywood 18 as positioned where the lower slab 167 is to be poured.
  • the inserts 12 are positioned on centers, as shown, to be alighed with the concrete columns or pillars 26 formed as part of the upper slab.
  • the reinforcing members 60 and 62 are supported on the washers 44, as shown in the Figs.
  • the end caps 54 are in position at the upper ends of the lower sections 30 of the inserts.
  • the reinforcing material includes the reinforcing mesh material 60 as well as the member 62 and 63.
  • the reinforcing material includes the reinforcing mesh material 60 as well as the member 62 and 63.
  • the chairs are eliminated by use of the inserts, as described in the foregoing.
  • the wire mesh screen may have mesh openings four inches on a side, for example and it is supported by the inserts as described, positioned at a corner of the mesh, that is the first layer of mesh.
  • the second layer can be laid on top of the first layer, with the intersecting wires at the diametrically opposite part or position of the insert, so that the result is that the insert cannot move around.
  • This can be seen in the upper and lower layers of mesh, positioned as described, to lock the insert members in position, immovably. This technique insures that the inserts will be straight up and down, that is vertical, which is, of course, desirable for purposes of threading in the reinforcing members.
  • the concrete is then poured for the lower slab. Screeding can be done in a manner known in the prior art, or in a preferred manner as described hereinafter.
  • top ends of the lower sections 30 of the inserts are at the same level as the top surface of the lower slab 22, they are not in the way and they are not an impedement to screeding.
  • caps 54 are removed and the upper sections 50 of the reinforcing struts are then threaded into the bores in the lower sections 30 so that they are in a vertical position with their angular parts 52 in a position as shown in Figs. 1 and 3 and as previously described.
  • the upper slab 22 is then poured producing a structural member as shown in the Figures with the columns or pillar 26 of concrete formed in between the pans or forms as already described with the reinforcing struts 50 embedded in the columns in a vertical position as shown.
  • the structural member, as described, has all the features, advantages and characteristics as described in the prior Patent No. 3,334,458 in addition to having the improvements as:described herein.
  • Fig. 6 shows a lower insert section 30' of a modified form of insert.
  • the section 30' has a threaded bore 70 in its lower end.
  • Numeral 72 designates a fitting that can be threaded into the bore 70, the fitting including a flange part 73, having extended point 74, which can be driven into the wooden surface on which the lower slab is poured.
  • the fitting 72 can be removed and then the threaded bore 70 provides means for supporting light fixtures or otherwise from the ceiling of the structure.
  • Fig. 7 of the drawing shows utilization of the inserts, they provide capability for facilitating screeding.
  • straight intermediate rods or sections, as shown at 80 are threaded into the lower sections 30 of the inserts on 8' centers to provide it support for brackets, that can support the screeding equipment.
  • Fig. 7 shows such an angle bracket 88, which has a part 90, having a hole in it where it can fit over the section 80 and it can slip down over the section 80 so as to be held by a wingnut 82, as shown.
  • 2' x 4's as designated by 94 can be supported in tow of these brackets, as shown, and then a screed, as shown at 100, can be supported on these 2' x 4's and slid over the lower slab for screeding.
  • the screed includes an upper member 102, having nailed to it the screeding member.104 with a spacer member 103 in between.
  • the sections 80 can be removed and the regular stirrups 50 can be put in position in all of the inserts as previously described.
  • Fig. 8 shows.a slightly modified arrangement, wherein the sections 80 can be left in position after screeding the lower slab. The upper slab is then poured and after pouring, the wet concrete is displaced sufficiently to attach modified reinforcing stirrups as shown at 50' to the sections 80, by way of attachment members or couplings, such as shown at 108.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP82100480A 1982-01-25 1982-01-25 Elément de construction armé et méthode de fabrication Ceased EP0084581A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP82100480A EP0084581A1 (fr) 1982-01-25 1982-01-25 Elément de construction armé et méthode de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP82100480A EP0084581A1 (fr) 1982-01-25 1982-01-25 Elément de construction armé et méthode de fabrication

Publications (1)

Publication Number Publication Date
EP0084581A1 true EP0084581A1 (fr) 1983-08-03

Family

ID=8188837

Family Applications (1)

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EP82100480A Ceased EP0084581A1 (fr) 1982-01-25 1982-01-25 Elément de construction armé et méthode de fabrication

Country Status (1)

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EP (1) EP0084581A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100803935B1 (ko) * 1999-09-03 2008-02-18 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Ｅｌ 디스플레이 디바이스 및 그 제조 방법

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1788481A (en) * 1928-12-20 1931-01-13 Ernest O Brostrom Screed jack
US1887455A (en) * 1929-05-22 1932-11-08 Helberg Edwin Walter Anchor for hangers
GB499159A (en) * 1937-03-03 1939-01-19 Hugo Olsen Improvements in or relating to reinforced concrete floor structures
US2602323A (en) * 1949-05-02 1952-07-08 Johannes C Leemhuis Floor structure
US3334458A (en) * 1963-10-21 1967-08-08 John C Leemhuis Structural member
DE1289285B (de) * 1966-06-20 1969-02-13 Hubmann Georg Stahlbeton-Massivdecke, Schalungsplatte dazu und Verwendung der Schalungsplatte
DE2021848A1 (de) * 1970-05-05 1971-12-16 Franz Kraemer Betonplatte mit Abstandhaltern und Stahlarmierung
DE2038036A1 (de) * 1970-07-31 1972-02-03 Gunnar Fredrikson AB, Stockholm Vorrichtung zur Befestigung von Wandteilen
US3678644A (en) * 1970-09-08 1972-07-25 Wates Ltd Method of gaining pre-cast concrete panels
US3764066A (en) * 1968-03-27 1973-10-09 Pomeroy J H & Co Inc Concrete railroad tie product

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1788481A (en) * 1928-12-20 1931-01-13 Ernest O Brostrom Screed jack
US1887455A (en) * 1929-05-22 1932-11-08 Helberg Edwin Walter Anchor for hangers
GB499159A (en) * 1937-03-03 1939-01-19 Hugo Olsen Improvements in or relating to reinforced concrete floor structures
US2602323A (en) * 1949-05-02 1952-07-08 Johannes C Leemhuis Floor structure
US3334458A (en) * 1963-10-21 1967-08-08 John C Leemhuis Structural member
DE1289285B (de) * 1966-06-20 1969-02-13 Hubmann Georg Stahlbeton-Massivdecke, Schalungsplatte dazu und Verwendung der Schalungsplatte
US3764066A (en) * 1968-03-27 1973-10-09 Pomeroy J H & Co Inc Concrete railroad tie product
DE2021848A1 (de) * 1970-05-05 1971-12-16 Franz Kraemer Betonplatte mit Abstandhaltern und Stahlarmierung
DE2038036A1 (de) * 1970-07-31 1972-02-03 Gunnar Fredrikson AB, Stockholm Vorrichtung zur Befestigung von Wandteilen
US3678644A (en) * 1970-09-08 1972-07-25 Wates Ltd Method of gaining pre-cast concrete panels

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100803935B1 (ko) * 1999-09-03 2008-02-18 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Ｅｌ 디스플레이 디바이스 및 그 제조 방법
US7427834B2 (en) 1999-09-03 2008-09-23 Semiconductor Energy Laboratory Co., Ltd. Display device with anode contacting input-output wiring through opening in insulating film
KR100864197B1 (ko) * 1999-09-03 2008-10-20 가부시키가이샤 한도오따이 에네루기 켄큐쇼 Ｅｌ 디스플레이 디바이스 및 그 제조 방법
US7710028B2 (en) 1999-09-03 2010-05-04 Semiconductor Energy Laboratory Co., Ltd. EL display device having pixel electrode with projecting portions and manufacturing method thereof
US8198806B2 (en) 1999-09-03 2012-06-12 Semiconductor Energy Laboratory Co., Ltd. EL display device and manufacturing method thereof
US8358063B2 (en) 1999-09-03 2013-01-22 Semiconductor Energy Laboratory Co., Ltd. EL display device and manufacturing method thereof

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Inventor name: LEEMHUIS, JOHN C.